	//给Date类添加了一个新的实例方法format
		Date.prototype.format = function (fmt) {
			//debugger;
		    let o = {
		        "M+": this.getMonth() + 1,                 //月份
		        "d+": this.getDate(),                    //日
		        "h+": this.getHours(),                   //小时
		        "m+": this.getMinutes(),                 //分
		        "s+": this.getSeconds(),                 //秒
		        "q+": Math.floor((this.getMonth() + 3) / 3), //季度
		        "S": this.getMilliseconds()             //毫秒
		    };
		    if (/(y+)/.test(fmt))
		        fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
		    for (let k in o)
		        if (new RegExp("(" + k + ")").test(fmt))
		            fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
		    return fmt;
		};
		
		export function fmtDate(date, pattern){
			let ts = date.getTime();
		    let d = new Date(ts).format("yyyy-MM-dd hh:mm:ss");
		    if (pattern) {
		        d = new Date(ts).format(pattern);
		    }
		    return d.toLocaleString();
		}